Electronographic Cameras For Space Astronomy

George R. Carruthers; Chet B. Opal; E. O. Hulburt

doi:10.1117/12.953539

1 September 1972 Electronographic Cameras For Space Astronomy

George R. Carruthers, Chet B. Opal, E. O. Hulburt

Proceedings Volume 0028, Instrumentation in Astronomy I; (1972) https://doi.org/10.1117/12.953539
Event: Instrumentation in Astronomy, 1972, Tucson, United States

Abstract

Magnetically-focused electrono-graphic cameras have been under development at the Naval Research Laboratory for use in far-ultraviolet imagery and spectrography, primarily in astronomical and optical-geophysical observations from sounding rockets and space vehicles. Most of this work has been with cameras incorporating internal optics of the Schmidt or wide-field all-reflecting types. These cameras have flown on a number of sounding rocket missions for stellar ultraviolet studies, and are planned for addition-al missions on sounding rockets and space vehicles in the near future. More recently, we have begun development of electronographic spectro-graphs incorporating an internal concave grating, operating at normal or grazing incidence. We also are developing electronographic image tubes of the conventional end-window-photo-cathode type, for far-ultraviolet imagery at the focus of a large space telescope, with image formats up to 120 mm in diameter. Our work so far has been with air-exposable alkalihalide photocathodes sensitive in the wavelength range below 2100 A. We are presently under-taking to extend the utility of the electronographic Schmidt and end-window devices toward longer wave-lengths, by the use of appropriate photocathode materials.

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George R. Carruthers, Chet B. Opal, and E. O. Hulburt "Electronographic Cameras For Space Astronomy", Proc. SPIE 0028, Instrumentation in Astronomy I, (1 September 1972); https://doi.org/10.1117/12.953539

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